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Since procps-ng was bumped from 3.3.17 to 4.0.4 in commitd79f40dbbe("package/procps-ng: security bump to version 4.0.4"), the build has been failing on !wchar configurations with: src/ps/output.c:68:10: fatal error: wctype.h: No such file or directory 68 | #include <wctype.h> | ^~~~~~~~~~ compilation terminated. The problematic code has been added by upstream commit605ea4a8f7, which landed in upstream release v4.0.0. To solve this, we simply add a BR2_USE_WCHAR dependency, and update the comment related to this dependency on the only reverse dependency of procps-ng. Fixes: http://autobuild.buildroot.net/results/afc035e866bec6f2c14f9d52fa74a9c1897706de/ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Julien Olivain <ju.o@free.fr> (cherry picked from commitf6fe892141) Signed-off-by: Peter Korsgaard <peter@korsgaard.com>